www.htk.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:41:1d:df:b6:eb:fb:9e:17:85:e8:68:55:40:73:4c:5e:06 was issued on by Let's Encrypt.

This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=www.htk.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:41:1d:df:b6:eb:fb:9e:17:85:e8:68:55:40:73:4c:5e:06
Serial Number (int): 283494920849313993806151806709389440343558
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 4a:5b:78:ec:b4:33:f9:63:b2:9f:e5:a8:c5:0c:4d:ae:f4:fd:85:33
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): fb:99:d9:cf:b1:a0:60:33:d6:91:3b:a0:55:b8:47:18:45:fe:f2:b3
Fingerprint (sha256): e7:e8:e2:26:5c:2e:36:f5:9d:27:a2:e7:0e:36:5a:09:f8:67:5f:8a:09:0a:dc:0c:3c:3d:e0:7e:18:41:cf:bc

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate www.htk.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.htk.org

Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

www.htk.org

Other certificates including the domain name htk.org

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.htk.org in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 283494920849313993806151806709389440343558
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-27 13:18:32 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-25 13:18:32 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.htk.org'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 836575048625547930475510585903726531048038030285775495455333910016504238465237445679828014018854137306472546266998955651109826831905940976456569151305985720097856088695261258365236405581219920254979224144288152462666257929074951731443542983829502574368425202258625680294340729773741465399054089718303481624198653515036137810162392693745589388950429169322939588076649193049018096574877156894442373352460484572206596181914349042588968479324195892727321171276843786117467028932838360719818068233404162029430296724536732149394762176482162487375341888789881591707136943136120656161774235263902383488456937062000785222705493258601989665692459067408172671913530504380192737509540865113843402164516532891806906206857358007459834367983915295787149546278822840342267655129466799835652548016417688148039566445271160309656990584191295369036353858209999112859291459152488641705376780397421508153505542684782165857762894735380200974720768171142603170340231910398333588907756183128915053184445878603836535686218370647254018815515694485823838413546774725487286490440204557468664149061232582751434228923724613812777391920365766104067530996215844420487073357409842402264243267002275209457631268659841372626198464984635200207221410597998183024923327071
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							4a5b78ecb433f963b29fe5a8c50c4daef4fd8533
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.htk.org'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016af9a8361a0000040300473045022100ec6d7386488e0d732bf27b047a56893b95e986a9331c2f847423cccb80423e82022043288f5f3f8e936493d86a23c74b6174d10557bf6d523a388feccc281cc0abed007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016af9a836090000040300473045022100b446e9fa79f0ee8ebb5a82531abb5a8b95f1040b1ae485e6dc00d4e927a95119022053e6042ac2403cd6a88fb8cac7c543eebd9f7a75b202f051e8b701f6d3f9ddb7
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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